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E438

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ID = 1700
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Universal 
Identical to E438 = 5-438 = RS4230 = RS4238 = W4080 = 354VX = W4100 = REN1004 = ACR4
Similar Tubes
Other shape (e.g. bulb type):
  T5-438
Normally replaceable-slightly different:
  107 ; 41MRC ; 484V ; A5004 ; AR4100 ; CJ438 ; DW3020 ; DW3559 ; DW4023 ; Dn404 ; E438N ; I4078 ; I503 ; M41RC ; M4A ; MRC ; NR4 ; NW4 ; S440 ; S440N ; S440N ; TE38 ; TM-CDT1 ; VT2_Oxytron ; W307_Marathon ; W415N ; W41W ; W438 ; WG43 ; WN4
Heater different:
  B2038
Other base:
  E438_4pin ; E438_4pin+2sideconn. ; E438_UY
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Jul.1929 : -- Original-techn. papers.
Dec.1929 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Successor Tubes MRC  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
e438.png
E438: Internet
Miguel Angel Trujillo-Rodriguez
7_19.png E438: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		e438_spec.png
E438: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 1= 1928?? ; 1= 1928? ; 1= 1928 ; 2= 1929?? ; 3= 1929? ; 24= 1929 ; 4= 1930?? ; 5= 1930? ; 38= 1930 ; 5= 1931? ; 36= 1931 ; 5= 1932?? ; 5= 1932? ; 15= 1932 ; 5= 1933?? ; 6= 1933? ; 9= 1933 ; 3= 1934? ; 13= 1934 ; 1= 1935?? ; 6= 1935? ; 6= 1935 ; 2= 1936 ; 1= 1937?? ; 1= 1937? ; 1= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):199

Collection of

Jean-Jacques Pontigny (F)
Jean-Louis HEYD (F)
Helmut Matysik (D)
Collection of a member from FIN
Aldo Patriarca (CH)
Karl - Heinz Bossan (D)
Collection of a member from D
Patrice Zeissloff (F)
Francisc VISKY (RO)
Danko Tkalec (HR)
Jacob Roschy (D)
Howard Craven (GB)
Karl Reiter (A)
Wolfgang Bauer (A)
Trev Levick (D)
Leif Ekornrod (N)
Reinhard Riek (D)
Ernst Röggla (I)
Christian Schaufelberger (CH)
Hartmut Völler (D)
Ludvig Rylander (S)
Thomas Lebeth (A)
 
e438_01.jpg

E438
 
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